4th-Atoms and Elements

How many protons does this element have? 2 8 20 40.078 Where is most of an atom's atomic mass? In the nucleus In the electrons cloud Atoms do not have atomic mass It cannot be determined What is the correct number of neutrons? 106 60 46 18 How can you determine an atom's atomic mass? Add the protons and electrons together Add the protons and neutrons together Add the electrons and neutrons together It cannot be determined What is the atomic number? 2 8 20 40.078 Which element is pictured below? Hydrogen Helium Lithium Beryllium Boron Which element is pictured below? Sulfur Phosphorus Gallium Magnesium Electrons are outside the nucleus and have a negative charge. True False How many energy levels does this atom contain? 1 2 3 4 Which answer correctly lists the particles in a neutral chlorine atom? 17 protons, 18 neutrons, 17 electrons 18 protons, 18 neutrons, 17 electrons 17 protons, 18 electrons, 18 neutrons 18 protons, 17 neutrons,18 electrons Match the subatomic particles with their charge and mass. protons positive neutrons no charge electrons negative What element contains 16 protons? Sulfur Oxygen Chlorine Potassium What is the atomic mass? 2 8 20 40 Which element is presented correct? n Ti ne MG How many neutrons are in this element? 2 35 45 80 Which element is pictured? nitrogen oxygen carbon boron Match the energy level with its correct maximum number of electrons. 3rd 18 2nd 8 1st 2